knucklebutt

A girl who is so skinny, most likely from anorexia, that when she wears a bikini you can see the bones of her pelvis move around in her ass when she walks because she has almost no butt cheeks.

"Danm! Someone tell that knucklebutt bitch to get some meat on her!"

knucklebutt by Joe July 27, 2003

Knucklebutt

A person who after having anal sex has a swollen and raised butthole resembling a row of knuckles !

Man , my girlfriend fucked me so hard with a strap on i woke up with knucklebutt !

Knucklebutt by Frymcfly March 2, 2023

knucklenuts

A trademark for an outrageously cool titanium ring

I'm getting me one of those KNUCKLENUTS rings!

knucklenuts by Ti Nuts September 28, 2006

Knucklebuster

A car, usually an old American car (1930's-1970's) who seems determined to skin, slice, and slash the hands of every mechanic who touches it, regardless of their skill-level. Resistant to tools, penetrating oils, vice grips, and laws of physics. Any bolt that is in this car will STAY in this car, whether you want it there or not, and if you try to remove it, it WILL break off, and leave you requiring 15 stitches in the process.

Holy Hell.........that '49 Mercury just tore my whole hand open, and all I was trying to do was change her damn oil!! What a knucklebuster!!

Knucklebuster by crackedheads666 August 2, 2010

knucklenuts

A trademark for an outrageously cool titanium ring! Go to knucklenuts.com.

I'm getting me one of those KNUCKLENUTS rings!

knucklenuts by Ti Nuts September 21, 2008

knucklebumped a floater 

when one's aggressive ass-wiping causes him or her to forcefully strike the chocolaty log within the toilet bowl.

i was taking a behemoth dump on my break before i looked at my phone and saw that i had only one minute 'til punch in time. i was wiping so aggressively/quickly that i, accidentally, knucklebumped a floater.

knucklebumped a floater by todd beanfeather February 24, 2009

knuckledusters 

A form of hand-to-hand combat weaponary, that fits around a persons fingers, to increase the amount of damage created with a punch. These are usually metal.

John: "How come your face is cut?"
Mark: "Adam hit me with knuckledusters on."

knuckledusters by IKane June 13, 2006